Plow colter



May 3,1927. 1,627,277

\ A. CRAIG PLOW COLTER Filed Deo. 29, 1922 Patented May 3, 17927.y

UNITEDfSTMBS 1,627,277 .PATENT l.oi-1Fici-1;. y

i nnnnnwecnero, .ormoromru VISLAND, ZEALAND.

vrnowcorran.-

Applica-umana December es, .1992, sensu 110.7609541; una inlnew zennd october@ 1922.

` This invention relates tothe mounting of the ordinary type .of disc colteryin plows, and .ithas been devised with'the object of providing means whereby ,the anglejoi'." the colter bothv with regard to the'vertical and horizontal lines of the plow, may be altered at will, in order to obtain various effects in the turning of the furroiiv.'` The invention consists in the combination, with a.colter.canry1ingnshank or stalk, of .a fork attached thereto and 'fini which 1thecolter is journalled, such :stalk mndfork being so attached to one another and:.to-thel plow frame that the colter maybe `set at any angle to the draught line of theplow and yalso aft any anglebetweenperpendicular .and horizontal to the surfaceof the lground .being treated.

4These results areobtained by arranging the shank yor stalk to swivel in the plow frame, `or alternatively by providing such shank or stalk with a sleeve bearing t0 turn thereon; and by connecting .the colter bear-` ing fork to such .shankorl stalk, `or tothe said bearing, by such .means that it may-be turned around .on ,an :axis in the planeioffits length and secured/.at any.. point within the alim-its lof themovement thus provided-for.;-

The accompanying drawings I illustrate .the means for .carrying out the invention, in two alternative ways. In such drawings Figure fl is a side Jelevation of the colter mounting means as constructed in one way.

Figure 2 is a plan thereof.

Figure 3 is a face view of the stalk member of the joint by means of which the fork is attached to the stalk.

Figure 4 is a face View of the inner end 0f the fork.

Figure 5 is a side elevationof the alternative means for carrying outthe invention. y

Figure 6 is a sectional plan thereof taken along the axial line of the fork.

Figure 7 is a face view of aV locking washer used in these means.

Figure 8 is an inner end elevation of the fork. I

Referring to Figures 1 to 4;-In this case the stalk A is made as a fixture to the plow iframe and upon its lower end has the sleeve B litted so that it may rotate. This sleeve is designed to be securely locked at any one of a number of points in its rotation by means of the set screw b and also by means of a bearing washer C on the lower end `of the stalk, the upper surface of which is ing the washer Vand cotter also between such lower teeth. When therefore' the sleeve is designedto .be xed'atany particularI point, .the set-screw b is loosened, the Cotter pin c withdrawn` and thewasher dropped clear, and ythe sleeve thenturned to the `required position and llocked by vreplacv pin andby tightening the'setscrewpv 1 i The .said sleeve is formed onv one Yside Vwith 1a bearinggplate DA. thatis made'to inoline downwards andinwards towards its` bottomI end V and is 4formed `with a .central bossvD projecting -romit's face and with two slots E and EA disposed .on respectively opposite sides of lthe central iboss and ex-r tending in lines `concentric with suchboss. Fis the lfork, inbetween ,the members of whichjthe colter `disc G is ydisposed and Vjou rnalled inany lof the ,well known ways upona spindle Gnf -liXled t0 extend trans versely between the: fork members. invention` `theendl 0r` Stein ofthe fork is formed or provided.' with -a `disc bearing plate H of 4correspondingv shape Y and size to thevbearing plate lD'and made on its outer soY In this face withy vf recess .Hf into which the 4boss posite sides of its centre and extending concentrically therewith. These slots are so arranged that they coincide with the respective slots E and E of the'bearing plate D.

Bolts K and K are. used for fastening the fork end firmly against the bearing plate D, such bolts being passed through the coincident slots Evand J and E and J These, when screwed up, will hold. the fork Iirmly in position to extend rigidly from the bearing sleeve B in the condition to hold the colter in working position. When the bolt nuts are loosened, the fork may be turned around its axial line and secured again in any desired position to adjust the vertical cutting angle of the colter.

`The ability to swing the .bearingsleeve B around the stalk-Ain thehorizontarl plane will allow for theV fore and aft angle of the.

fork being adjusted with regard to the plow frame and thus kalso provide for the adjustment of the colters horizontal,v cutting angle.

In the construction shown in Figuresjf'to 8, the same results are obtainable; but in this case the stalk A is. itself swivelledvto rotate about its axis in the plow framein amanner already wellv known, to 'provide' for kthe fore and aft adjustment of the, fork. To obtain the vertical adjustment of the colters angle, the fork Fis in-this caseattached `to the lowery end of the stalk by means of a bolt M that is passed through :from the forward end of the forkv and through the stalk in aline axially with the axialline of the ffork. The lower end of the stalk is given aj bend so that the. forkextends with the downward .inclination necessary for the drag on the colter. Interpsed, however, between the stalk face and theV end of the fork are twowashers N and N which are respectivelyY locked to such stalk face and the fork'by keys Vn, and the engaging may` then bey locked in such position by screwingA up the bolt again.v

y 1L A1 colter securing means, comprising a stalkadapted to besecured in vertical posi tion to a plow frame; a sleeve rotatably adjustable on'the lower'portion of-the stalk stalk immediately -belowvthe/ sleeveV and formed with a toothed upper edge to adjustably interlock with theteeth on said `andformed with a toothed lower edge; a

fastening ring detachably secured to saidsleeve so asvto hold thelatter in adjusted. Y

position; a member .for clamping the sleevev directly to the stalk;a downwardly` and inwardly inclined 4bearingl plate: rigidly connected'to .said `sleeve and formedwith 'a central:projectiomf and with a pair of arcuate slots at opposite. sides of and concentricwith suchiprojectionya colter fork provided-withabearing plate which isdisposed flat against, the `first plate and which is formed with a central recess wherein the projection on that plate-is journalled, and with a pair lof arcuate slots at opposite sides of and concentricV with such'. recess andadapted to register with the first slots to enable a" rotaryA adjustment of the fork about its axis with relation torthesaid first plate and the sleeve and stalk; and fasten- -ers passing through thepairs of registerretainI-the-fork inadjusted po- Y ingV slotsato sition.'

2. i A' colter securing means, according to claim 1, in which the. fastening ring has its lower edge, Vas well fas its upper, toothed; andVV in: which a removable`-co1ter pin is passed throughv the stalk end andengaged withlthe lower teeth on the ring to lock the i 'latter to the stalk.`

'i In testimony whereof I ailizrmy signature.

f j ANDREW CRAIG. Y 

